Regulator stem seal



March 23, 1948. J. J. DELANY 2,438,360

REGLATOR STEM SEAL Filed Nov. ll, 1944 Patented Mar. 23, 1948 UNITED.STATES PATENT v(,)FFlCl REGULATGR STEM SEAL John J. Delany, Brooklyn,N. Y.,ass ignor to Der larry Realty Corporation, New York, N. Y.. acorporation of New York Application November 11, 1944, Serial No.562,957

1 Claim. (Cl. 7286-7-26) accessible from the outside of `a casingcontaining a iiuid under pressure in excess of atmospheric pressure so.as to permit of adjustments of means Within the casing while precludingleakage of uid from the inside of the casing and While not necessarilyrestricted thereto, the same is ideally adapted for use in connectionwith flush Valves so as to provide means adjustable from the exteriorthereof for regulating the timing or length of the flushing operationwithout permitting of leakage of water around the regulating mltlls..

The invention broadly eompreliends a device oi vthe indioated eharaeterwhich is Iextremely simple in its construction and mode of operationwhich may be inexpensively produced as a part of the apparatus withwhich it is associated and which electively functions to prevent leakageWithout appreciable `wear yand the' neeessity of adjustment to oornpensate thereior, ywhile taking the place of more complicated meanssuch as stuing boxes, packing glands and the like which are moreexpensive and require frequent adjustment as well as replacement of thepacking.

More particularly the invention is directed to a device of the characterset forth which includes a casing containing a uid under pressure inexcess of atmospheric pressure in which the casing is formed with anaperture opening through the inner and outer surfaces thereof with aregulating element fitted therein and adjustable longitudinally of theaperture and having its inner terminal protruding into the casing forengagement with the means to be regulated, wherein the inner surface ofthe casing surrounding the aperture is formed with a recess with acompressible elastic sealing member having an opening snugly tted overthe regulating element and inherently contracted thereabout and arrangedwithin the v`recess for rendering the casing uid tight in the region ofthe regulating element.

With the above recited and other objects in view, the invention is morefully described in the following specification, particularly pointed outin the appended claim and illustrated in the accompanying drawings`wherein- Fig. l is a side view of a flush valve with parts broken awayand equipped with a regulating screw and sealing means thereforconstructed in accordance with the present invention.

Ttig. 2 is an enlarged fragmentary sectional view showing theinterlitting of the rib and groove of the sealing member prior to theapplication of pressure thereto.

a detail perspective view of the seal-- member per se. Referring to thedrawings by characters of reference, A designates the casing of adiaphragm type nnen valve which is merely illustrative of `one of the:l1-Ses of the invention to demonstrate its prac cal application.. As isusual in this type of iiush valve, the :upper portion thereof Within4.the cap .section B consti-tutes a Water pressure chamber C .locatedabove the diaphragm valve vmember D. An upper valve element `lll isnormally disposed in elosed relation to a v,seat F whichy surrounds; theeentral passageway G through the diaphragm valve rnelnbergD and whichupper valve element E is cant-ed and dis- ?Qlaeed from its seat by theengagement of 'the terminal H of a handle J with the actuator stem Kfopen :manipulation oi said handle.

Heretofore, regulation of' the length or duration of the flushing.Operation has been set before the valve casing closed and anycorrection thereto or subsequent regulation thereof has required theremoval of the cap section B for gaining access to .the parts for making`proper adjustment.

The .present invention is .directed to meansaecessible from the outsideof the casing which contains the fluid under pressure for the purpose ofregulating or adjusting the parts within the casing while avoidingleakage and, as illustrated in the present disclosure the removable capsection C is formed with an aperture Ill which is threaded and withwhich the threaded head I I of a regulating element or screw L isengaged to adjust the same longitudinally of the aperture by turningthereof in opposite directions. The element or screw L is formed with aninwardly directed reduced shank I2 which protrudes into the interior ofthe casing to perform its function.. In the flush valve, as illustrated,the inner terminal of the shank I2 constitutes an adjustable abutmentwith which the upper valve element E engages to limit and control theopening of the same with reference to its seat F to thereby regulate theduration of the flushing operation. In order to prevent leakage throughthe aperture I0 and around the head Il of the screw L a compressibleelastic sealing member M is utilized which may be made of rubber 0r anyequivalent material and said member is formed with an opening I3 of asize to snugly lit and inherently contract about the shank I2 of thescrew L so as to prevent leakage through the opening I3 between the wallthereof and the periphery of the shank. The sealing member or washer Mis arranged within a recess M formed in the inner surface of the capsection B of the casing in surrounding relation to the lnner end of theaperture lll and the upper face I5 of the sealing member M is forcedinto engagement with the inner wall I6 of the recess by the pressurewithin the casing to prevent egress of the fluid therefrom between theface I5 and said wall I6 of the recess.

If desired, the sealing member or washer M may be provided with anendless rib I1 on its upper face and the inner Wall of the recess with amating groove I8 to provide a more effective seal.A Preferably the ribI1 as shown in Fig. 2y

is of greater height than the depth of the groove and of lesser widththan the width of the groove y so that the uid pressure Within thecasing depresses the height of the rib and increases its* Width so as toll the groove and render the action of the sealing member more eiectivein prevent` its inner terminal extending through and protruding from therecess Vinto said casing, a compressible elastic sealing member havingan open` ing compressed about the regulating element and `arrangedwithin the recess for preventing leakage through the aperture in thecasing, said inner Wall of the recess being formed with an endlessgroove spaced from andY disposed in surrounding relation toY saidaperture therein and ing any leakage between the'face i5 and the innerWall l B.

Under this construction and arrangementgit isV apparent that turning o fthe regulating screw L to adjust the same toward or away from the uppervalve E accomplishes the regulation of thelushing operation Without thenecessity of opening the valve casing While the pressure with- Yin thecasing impinging upon the sealing mem- Vber or Washer M preventsdisplacement or leakage. It is obvious that Within the scope of theinvention the regulator screw'may be employed forV other purposes thanthat disclosed without departing from the spirit of the invention.

What is claimed is: f In a device of the character set forth, a casingadaptedto contain a fluid under pressure in excess of atmosphericpressure, said casing having ar`ecess in its'inner surface defined by an*innerwall and an angularly related side wall extending inwardly fromsaid inner wall, said recess being formed with an aperture opening atits opposite ends respectively through the outer surface of the casingand the inner wall of the recess, a regulating element tted within andadjustable longitudinally of said aperture with Yiile of this patent:

said sealing element being formed with an endless rib on theface thereofconfronting the Vinner wall .of therecess, said rib being of `greaterheight than'the depth of the groove and of lesser widthA than thewidthof the groove to permit the iiuid pressure within the casing to depressthe -height and increase the width of the rib so as toV fill the grooveand render theV action of the sealing member more effective.

vJOHN J. DELANY. Y

REFERENCEsCITED- v The following references are of record in the UNITEDSTATES PATENTS

